#include <iostream>
#include <Eigen/Dense>
#include "utilities.hpp"
using namespace Eigen;
using namespace std;

template <typename T>
using Vec3 = typename Eigen::Matrix<T, 3, 1>;
int main()
{
    Vec3<int> v1;
    v1 << 1, 2, 3;
    cout << v1  << endl;
    return 0;
}